1221410201012 has 12 divisors (see below), whose sum is σ = 2140291460580. Its totient is φ = 609898355136.

The previous prime is 1221410200963. The next prime is 1221410201021. The reversal of 1221410201012 is 2101020141221.

It can be written as a sum of positive squares in 2 ways, for example, as 325725884176 + 895684316836 = 570724^2 + 946406^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201682937 + ... + 201688992.

It is an arithmetic number, because the mean of its divisors is an integer number (178357621715).

Almost surely, 2^{1221410201012} is an apocalyptic number.

It is an amenable number.

1221410201012 is a deficient number, since it is larger than the sum of its proper divisors (918881259568).

1221410201012 is a wasteful number, since it uses less digits than its factorization.

1221410201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403372690 (or 403372688 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1221410201012 its reverse (2101020141221), we get a palindrome (3322430342233).

The spelling of 1221410201012 in words is "one trillion, two hundred twenty-one billion, four hundred ten million, two hundred one thousand, twelve".